Revolving door



J. M. TATMAN REVOLVING DOOR July 3, 1934.

Filed March 4, 1951 INVENTOR .Zxw

ATTORNEYS Patented July 3, 1934 UNITED STATES..

REVOLVING DOOR James M. TatmanCincinnati, Ohio, assignor to,

Van Kannel Revolving Door. Company, New York, N.' Y., acorporationof'NewJersey Application March-4, 1931, Serial No.' 519,991:

7 Claims.

This invention relates to doors andisparticu-v larly directed to thattype of' door known asa revolving door which includes a plurality ofwings extending radially from: a commonV axial support andV movingwithin a circular cage having door-- ways in opposite sides.' Morespeciiically, the in vention is primarilyldirected'to the apparatusiii-- eluded in the mounting of the wings on the com'-Y mcnaxialsupport' for. permitting collapse ofthe 10- wings incase ofi' panicwhere effortsA are made to.

revolveY the door in reverse directionssimultane` ously or'in caseswhere it is desired to fold'theV Wings ofthe door for clearing thedoorway.

It is an object of' this' invention to provide an improvedfrevolvingdoor of" the type above men-V tioned which includes highly-efficientwing release devices at the top or bottom' of :the axial 'mounting or"the revolving door on both, permittingzsubstane' tial rotative collapseof: the. doors under: undue -strainsabove the forces'required to'.revolve itl for ordinary use and for'collapsingthe'-door when it isdesired to'fully open the: passageway and render the door inoperative..

It is another object ofthis inventionto provide:

devices-incorporated Ain a-revolvingfdoori forauto'- matically releasingthe* wings. ofthedoor from their normal positions under undue strainswhich:

are of ahighly improyednatureinzview: of-.the fact that they fullystabilize. the wings in their normal operative positions, will not.become. inoperativeA or. bind in. position.` and.V are immediately and.-sensitively responsive. to collapse when..rotative.

pressures over the maximumare exerted.

It is a further objectfinviewE of the foregoing.

-to provide that the wings. ofI therevolvinggfdoor. are mounted in theirrelativepositions. by means of the automatic release devices. in.association.Vv

It is-still anotherobject of" this invention to provide a revolving doorin whichthe features..

of collapse include the utmost flexibility for ar,- ranging the wings ofthe door when the' door. is to be rendered'inoperative whereby thepassage'- way can be substantially cleared' without dismantling therevolving door from its axial mountilng.

Other objects and certain advantages will be more fully-apparent fromthe description of the laccornpanying drawing, iniwhich:

(CLy 20e-I8):

Figure' 1" isa perspective v-iew illustrating a revolving doorincorporating the' presentf improvements;

Figure 2`fis a sectional view taken on line 2*-2, Figure l; sho-wing theaxial i mounting construction at the loWerf end of the-revolving' doorinplan view. f

Figure 3 is a sectional view taken online 3 3,V Figure 2; additionallyillustratingk the-detailsv of the door mounting.

Figure 4 isasectional viewtakenl Online Li--4=, Figure 3, detailing` theconstruction and`mounting of one of the detents'and'its attachmentwithin the particular wing ofthe door.r

The invention is herein disclosed asapplied to a door. having fourwings, it beingy understood however that' any ynumber* of wings may belprovided. Thewings of Athe door are disposed radially from afi'xedcenter or axis' andare rigidly but collapsibly'supported onl a-cornmonaxial mounting for free revolution; The cage-'within which thedoorrevolves is of any Yconventional -designas well astheiconstruction'ofithe wings of the doory independent of the constructionat thev point'of attachment of'the devices" of-Y this invention. 89

Preferably, themechanisms.associated withn the wingsv and axialAmounting, whichf provide the safety or collapsing feature for. the wingsandk whichreleasev when pressuresare' exertedpagainst themA greaterthanthosev required to revolve'the 85 door, are provided atzthe'topandbottom .ofthe door respectively. In view of` the duplication, onlythe mechanism at the lower endpoflthev axial mounting of the revolvingdoor is illustrated: The` assembly of certain parts ofi the central.axial mounting, includes vthe assembly of; parts instrumental foraccomplishing the obj ectV of this invention.

Referring. specifically tothe drawing, the floorY is indicated at6',`.the wings of; the door at 7; the lower. or base mountingA for thecentralaxis of the door at 8, the upper mounting at 9`and;,the cage ordoorway atrlO.'r

A socket 11 is provided in' theoor directly be.- low'andconcentricwiththe axiszof theA door, this. socket' includingia sleeve 12countersunklinto the concrete or flooring;V Anothervv sleeve 13including anrupper attaching ange` 13a' is attachedl to the sleeve 12byA meansvr of` screws orrivetsv andi depends into" the socket.Thissleeve' hasthe stationary central shaft 16 of the door attachedthereto in'a tapered inner bore by means of :across pin 16a passingthrough a slot inthe lower endofthe central shaft; This central'shaftstruc'- tureis oonventional The feature of having the entire revolvingdoor assembly removable from its axial position within the cage byshifting the central shaft longitudinally of its axis forms no part ofthis invention. The parts described for accomplishing this feature havebeen only included for the purpose of fully describing an axial mountingwith which the present release devices are associated.

A disc 14. is provided xed to the spindle or axial support tube of thedoor by means of keys 15a. This disc 14 rests on the upper surface ofthe sleeve 13 for a rotative bearing and is maintained against lateralshifting on the axial mounting by means of a sleeve 16D between thesleeve 15 and the shaft 16. The disc 14 is preferably of fabricatedstructure for convenience of manufacture and assembly of the parts, thishowever being entirely arbitrary as will be apparent.

Primarily, the disc includes a concentric groove 19 in its uppersurface, this groove being of considerable depth. In the present case itmay be of a depth slightly greater than half the thickness of the disc.The groove is provided with a plurality of vertically disposed taperedapertures 20 which extend entirely through the disc. There is oneaperture provided for each wing of the door for receiving the respectivelocking detents for the particular doors.

Each door includes a vertically movable detent or spring actuatedplunger 21. This plunger is slidably mounted within a metal block 22inserted in a groove 22a in the lower edge of the wing of therdoortoward the inner side thereof. The metal block includes a hollowupwardly extended circular lug 22b housing a compression spring 23disposed between a shoulder 24 of the detent formed by counterturningthe upper end thereof and an inner flange 25 of the lug, the upper endof the counterturned portion of the detent extending through the top ofthe circular lug for the purpose of additionally guiding the detent overand above that guidance provided by the main body of the detent disposedin the block.

Another metal block or insert 26 is provided above the mentioned blockfor surrounding the hub, this upper block being secured in positionwithin the groove 22a of the door by means of the face plates 27attached to each side of the door. Screws 28 extend through the faceplates into the 3 upper block. The lower or detent support block isattached in place by means of heavy screws 29 extending upwardly fromthe underside thereof into the upper block. The underside of the detentsupport block engages upon the disc and the detent extends into thegroove and when in registry with its particular tapered aperture has itslower or tapered end 30 engaged in the particular aperture.

The block housing the detent also includes an inward extension which hasa vertically disposed V-shaped groove 31 on its extreme end, whichgroove is adapted to engage a particular tooth extension 32 formedradially of a hub portion 33 of the disc. The inner end portion of thelug further includes a downwardly extended lug 34 tting within aparticular groove 35 in the upper face of the disc, this grooveproviding appropriate clearance disposed in the proper manner forpermitting passage of the downward extension outwardly into theconcentric groove when that function is required.

Assuming that each wing of the door is in its proper position radiallydisposed from the central axis of the door, the following action will bei yobserved in case of undue pressure on a particular wing. If thepressure exerted against the wing of the door is greater than thatrequired to revolve the door, since the compression spring of the detentis provided of a strength in keeping with the taper of the lower end ofthe detent which will permit the detent to move upwardly and out of itsaperture, the detent will function in this manner and be free to travelin a circular path in the concentric groove. This relases one point ofsupport of the wing with the result that the inner or grooved end of theblock rolls on the tooth shaped radial extension of the hub as thedetent moves in the groove. After a certain amount of collapsingmovement in this manner, the outer lug extension of the door containingthe vertical groove Will have moved into the lateral extension of itsparticular groove suiiiciently to pass outwardly into the circular trackor concentric groove.

The clearance grooves for the downward lug extensions are extended onthe outer side of the concentric groove as at 36 to permit the lug toswing slightly beyond the center of the circular track which permits atotal collapsing and a full 135 swing of the wing of the door incollapsing movement. It will be observed from the drawing that by thisarrangement it is possible to swing the wings of the doors which wereformerly disposed at right angles to each other completely around untilthey are disposed parallel, each passing through 135. The other twodoors which are intermediate these two wings as the collapsing occursneed only move and they are thereupon disposed in parallelism with eachother and with the first two wings. Therefore, if it is desired tototally collapse the door, this can be done purposely to provide clearentrance without operation of the door, aligning the four doors into acompact central position which at its fullest or aggregate width is notmuch greater than the combined thickness of the four wings (see dot anddash lines of Figure 2). Also the door wings may be disposed in pairsradially disposed from opposite sides of the axial mounting in line withthe traflic through the doorway.

By the provision of the downward lug and detent, which parts remain intheir xed grooves or tracks after the particular wing has collapsed, thewing still remains as a fixed part of the assembly. For convenience inmanufacture, it is possible toI make the disc in three parts. A maindisc 37 may be provided including a central circular countersunk portion38 and an upwardly extending hub 39. Another disc 40 may be serted overthe hub and into the countersunk portion for making up theconcentric'groove and including the clearance grooves for the downwardlydisposed lugs in the respective wings. On top of this, a circulartoothed element 41 may be mounted surrounding the hub of the plate andaptly described as part of the hub.

The construction of the parts of the central axial mounting of the doorextending from the top to bottom thereof for joining the respectivemountings may be of any standard construction. It is proposed to jointhe parts by means of the sleeve or tube 15 keyed to the respective hubsof the upper and lower discs so that they rotate unitarily. Anothersleeve 43 may surround the inner sleeve for the purpose of providing anartistic post which will be exposed between the respective wings andwhich fits into the inner edges of the wings in a manner lending to thegeneral appearance of the door.

Having described my invention, I claim:

l. In a revolving door, a plurality of wings disposed radially from acommon axis, a spindle for mounting said doors on the common axis,vertically operating detents mounted in and extending from the loweredges of the doors, a circular plate xed to the spindle and including aconcentric groove in its face adjacent the detents, and a plurality oforifices, one for engagement by each detent for locating the Wings intheir normal radial operative positions, each of said wings having avertical groove on its inner edge, said circular plate including a hubhaving teeth engaging the respective grooves for further maintaining theWings in normal radial operative positions, said plate includinggrooves, extensions formed on the lower edges of the Wings and disposedin said grooves, said grooves providing clearance for the extensions onthe Wings whereby they move outwardly as the detents move in a circulartrack after displacement from the orices for permitting full collapse ofthe door beyond 90.

2. In a revolving door, a plurality of Wings radially disposed, aspindle with Which said wings are revoluble, a plate attached to saidspindle, said plate being provided with a guide groove for each wing andan annular groove, said guide grooves communicating with the saidannular groove, means depending from each Wing for engagement With thesaid annular groove, and means depending from each Wing for engagementwith its respective guide groove, said first-mentioned means beingadapted to move in said annular groove and said second-mentioned meansbeing adapted to move in said guide grooves and into the said annulargroove for guiding the Wings in collapsing the door.

3. In a revolving door, al plurality of wings radially disposed, aspindle with which said Wings are revoluble, a plate attached to saidspindle, said plate being provided With a guide groove for each vringand an annular groove having depressions in the bottom thereof, saidguide grooves communicating with the said annular groove, latching meanson each of said Wings cooperating with said depressions in the bottom ofsaid annular groove for releasingly holding said wings in radialpositions, and means on each door Wing for engagement with itsrespective guide groove, the said la'tching means on each wing beingadapted to move in said annular groove and the said guidegroove-engagingmeans being adapted to move in said guide grooves and into the annulargroove for guiding the wings in collapsing the door.

4. In a revolving door, a plurality of wings radially disposed, aspindle with which said Wings are revoluble, a plate aixed to saidspindle, said plate being provided with an annular groove having aplurality of depressions in the bottom thereof said plate also beingprovided with a plurality of guide grooves, each of said guide groovescommunicating with the said annular groove, a vertically-movable detentmounted in each wing for engagement with the said annular groove and forengagement with said depressions for holding the Wings in radialpositions, a vertical groove in each Wing, teeth carried by the saidplate for engagement with the vertical grooves in the Wings, and

means on the wings for engagement with the guide grooves in the plate,said means moving in said guide grooves and said detents moving in saidannular groove when the Wings are moved to collapse the door.

5. In a revolving door, a plurality of radiallydisposed wings, a spindlewith which said Wings are revoluble, a plate affixed to said spindle,said plate being provided with a substantially U- shaped guide groovefor each Wing and an annular groove, said guide grooves communicating ateach of their ends with said annular groove, means on each door Wing forengagement with said annular groove, and means on each door Wing forengagement with its respective guide groove, said rst-mentioned meansbeing adapted to move in said annular groove and said secondmentionedmeans being adapted to move in one leg of each of said guide groovesWhen the wings are moved in one direction to collapse the door and saidsecond-mentioned means being adapted to move in the other leg of each ofsaid guide grooves when the wings are moved in the opposite direction tocollapse the door.

6. In a revolving door, al plurality of radiallydisposed wings, aspindle with which said Wings are revoluble, a plate affixed to saidspindle, said plate being provided with a guide groove for each Wing andan annular groove, said guide grooves communicating with the saidannular groove on the inner side thereof, said plate also being providedWith grooves formed in the outer annular side of the annular groovewhich align with the ends of the guide grooves, means depending fromeach Wing for engagement with the said annular groove, and meansdepending from each wing for engagement with its respective guidegroove, said first-mentioned means being adapted to move in said annulargroove and said second-mentioned means being adapted to move in saidguide grooves and into the said annular groove and to engage the groovesin the outer Wall of the annular groove for guiding the Wings tocollapse the door.

7. In a` revolving door, a. plurality of radiallydisposed wings, aspindle With which said wings are revoluble, a plate alixed to saidspindle, said plate being provided With a substantially U- shaped guidegroove for each Wing and an annular groove, said substantially U-shapedguide grooves communicating at each of their ends With said annulargroove, said plate also being provided with grooves formed in the outerannular side of the annular groove which align with the ends of theguide grooves, means on each door Wing for engagement with said annulargroove, and meanson each door Wing for engagement With its respectiveguide groove, said Erst-mentioned means being adapted to move in saidannular groove and said secondmentioned means being adapted to move inone leg of each of said guide grooves and to engage the grooves in theouter Wall of the annular groove when the Wings are moved in onedirection to co1- lapse the door and said second-mentioned means beingadapted to move in the other leg of each of said guide grooves and toengage the grooves in the outer wall of the annular groove When thewings are moved in the opposite direction to collapse the door.

JAMES M. TATMAN.

